Willahd l



March 8, 1932. w. MORGAN 1,848,190

SOUNDPROOF -AND HEAT INSULATING GLASS Filed Aug. 25, 195o 179./ Fig. 3

1 '/7 /ffa INVENTOR h/lku'd L. Maya/z Patented Mar. 8,1932

UNITEn STATES PATENT OFFICE WILLABD L. MORGAN, F N'UTIEY, NEW JERSEY,ASSIGNB, BY ASSIGNHENTS, TO LIBBEY-OWENS-FOBD GLASS COMPANYSOUNDIiROOF-AND HLEAT INBULATING GLAB Application and August 23, 1930.'serial 110.477,:35.

The present invention relates to laminated glass structures andembodies, more speelfically, a laminated or composite glass having Y theproperties of being highly sound proof 6 and heat insulating.

The invention further relates to sound proof structures consisting ofcomposite' glass wherein a plurality of laminations of glass areprovided, between certain of which lami- 10 nations air cells or pocketsare formed. The sound resisting, as well as heat insulating character ofthese air pockets will be readily appreciated as the invention isdescribed in further detail hereinafter and the widehlse 15 to whichthesecomposite glass structures may be put will partially be revealed asthe invention is'further described. y

An object ofthe invention, accordingly, is toy provide a composite glassstructure in which is incorporated means to provide heat 'insulating aswell as sound proof characteristics. l

A further object of the invention is to provide a composite Vglassstructure of the above character wherein an air pocket is formed betweenthe laminations .of the lglass structure.

Further objects, not vspecifically'-enumerat ed above, will beapparentas the invention is described in further detail in connectionwith the accompanying drawings, wherein:

Figure l is a plan view of a composite glass structure constructed inaccordance' withthe present invention.

4 35 Figure 2 is a view 1n section, taken on line 2-2 of Figure 1, andlooking inthe direction of the arrows.

Figure 3 is a plan view of a modified form of the invention, thecomposite glass struc- 40 ture embodying a plurality of air pocket-sbetween the laminations thereof.

' Figure 4 is a view in section taken 'on line' 4 4 of Figure 3 andlooking in the direction of the arrows.

5 Figure 5 is a plan view showing a composite glass structure vof afurther modified form, this form embodying an air pocket between each ofa plurality 'df laminated sections.

' 5 Figure 6 is a view in section, taken on linev 6 6 of Figure 5, andlooking in the direction of the arrows. Y i

Referring to the above drawings, particu- `larly to the structure shownin Figures 1 and 2, a composite' glass structure is shown as formed oftwo glasslaminations a and a', in the form shown these laminations beingformed of rectangular glass lates. l

Between these plates an adjacent the perimeters thereof, is a s acingmember b which is preferably formed by stencilin from a sheet ofcellulod, thus forming a ollow pocket c between the plates a and a', theextremities of which are defined by the cellulod stencil b.

It is preferred that the glass be coated with gelatine, preferably byspraying, a protecting metal stencil being placed on the glass to reventthe gelatine coating from being app ied to the surface of the glassagainst which the cellulod stencil is not a plied. The cellulod.

is stenciled out to the esired sha that is, of the eutlineof thegelatine coatlng on the glass and is lightly sprayed with known solventsto soften the surface thereof. The cellulod is then placed between twosimilarly formed glass plates and heat and pressure applied thereto. Inapplying vpressure to these. elements great care is exercised to preventpressure from being applied to any portion of the glass plates underwhich there is no cellulod.

It has been found that cardboard stencils or other for1ns^of padding arequite effective in this respect, being placed over the plates to overliethe cellulod stencils. Care must be exercised to form the cardboard orpaddin stencils in exact conformity to the cellulod stencil inasmuch aspressure on the glass over the area of the pocket frequently causesbreakage. Accuracy in the formation of the padding stencils is verynecessary inasmuch as it results in securing the laminations of` maAprevent breakage.

This is placed in the center of the sandwich on the lower glass and theupper glass is then applied, leaving a small aperture. to permit vaporsto escape. The solvent levaporates under the influence of the heat andcarries the air out with it from between the" glass which is slowlyincreased bythe fact that the solvent is absorbed by they side walls ofthe Celluloid.

In the construction shown in Figures 3 and 4, plates a and a are shownas being spaced by a Celluloid stencil d, the outer portion of which issimilar to the stencil 5, but having intersecting portions e. Theseportions form a pluralit of air pockets f, thecomposite structure eingformed in a manner similar to that described in connection with thedevice defined by the stencil, and securing the secn ond plate to thestencil.

2. The method of forming a composite glass structure comprising ap,lying a celluloid stencil to a glass plate, p acing a quantity of avolatile Celluloid solvent upon the plate within Vthe stencil, applyingheat to the plate, applying a ysecond glass plate over the stencil,permitting the vapors to escape, completely closing the space defined bythe stencil, and securing the second plate to the stencil.

3. The method of forming a composite glass structure comprising applyinga celluloid stencil to' a glass plate, placing a quantity of a volatileCelluloid solvent upon the plate Within the stencil, applying heat tothe plate, applyingva second glass plate over the stencil, permittingthe vapors to escape, completely closing the space defined by the sten-Cil, and applying pressure to the second plate only at points overlyingthe stencil.

This specification signed this 15th day of August D. 1930.

WILLARD L. MORGAN.

shown in Figures 1 and 2. In certain iny l stances,for example,refrigerator doors, etc., it is desirable to providey a compositestructure of great strength. For that purpose, the

composite structure of Figures Land 2-is modified by substitutingcomposite plates for the plates a and a", the Stencil b being s11111-lar to that of Figures 1 and 2. These composite plates are formed of`inner and outer plates g and g', respectively, layersof celluloid Itsecuring Ithe plates together 1nl a Well known fashion'.

While the 'structures shown in Figures 1,

2, 3, and 4 are not shock proof in the sen/se that they cannot bebroken,the cementing of the two panes ofi glass by border strips in the mannerdescribed above, produces a structure which is abnormally resistant toshocks.

f Furthermordunless a very severe blow is pended claims.

received 'by the structure, the larger fragments remain held in positionby the celluloid.

While the .invention 'has been described with specific reference to thestructures `shown in the accompanying drawings, it isV not to belimited, save as defined in the ap I claim as my invention: 1. Themethod of fforming ,a composite glass structure comprising applying aloid stencil to a glassplate, placing a quan- Cellll. i

tityof a volatile celluloidsolvent'upon the plate within the stencil,'applying a second glass Vplate over the stencl permitting the c5 vaporsto escape, completely closing the space

